Số nghiệm của phương trình \(x^4-5x^2+4=0\) là

A.1                               B.2                               C.3                         D.4

Một khu vườn hình chữ nhật có chiều dài gấp 2 lần chiều rộng được bao xung quanh bằng x (m) hàng rào. Diện tích khu vườn tính theo x là?

1. Nick visited Ha Long Bay ..... summer..... 2016.

a. on/ in             b. in/ by         c. at/ in           d. in/in

2. He ....... in HN 3 years ago.

a. started teaching             b. started taught          c. starts taught       

d. taught to start

3. .........! Trafic is crowded

a. Careful           b. drives careful        c. be careful         d. be carefully

Đặt câu hỏi bằng từ cho sẵn:

1. The dress looked very nice. (How)

2. Ba spoke about his last summer vacation. (Who)

Chia V trong ngoặc cho đúng dạng:

1. My mom ( teach) Math at this school.

2. I (not/ enjoy/ play) game last time

3. They (live) in 2011

Tìm lỗi sai và sửa lại:

1. When I was young, I don't like candy.

2. Did you often play game last time?

Hoàn thành câu ở quá khứ đơn:  Johny/ yesterday/ you/ phone?

Tìm lỗi sai và sửa lại:

1. She often is late for school in the morning

2. When I was a baby, I always go swimming with my brother.

3. Don't sing, please. My dad works in room

4. She always drink fruit juice but today she drinks coffee

5. I want you don't come back home late.

6. My sister reading book and I'm playing game in room.

7. They are poor but they live very happy

8. Don't sad. I think that everything will be better

9. Do your parents want you are a good student?

10. My friend- Nick can speaks Vietnamese very well

Chia V trong ngoặc:

1. There (be) something for us ( do) today. 

=> ...................

2. your dad (teach) you ( drive) car?

=> ............

3. There ( not/ be) any oil- cooking in bottle.

=> ....................... 

4. She ( like/ be) a doctor (care) for the sick.

=> .............

Dịch sang T.Anh:     Sáng nào mẹ tớ cũng dành thời gian tập thể dục.